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MOBISYS
2007
ACM
14 years 5 months ago
2007
ACM
In this work, we investigate the use of directional antennas and beam steering techniques to improve performance of 802.11 links in the context of communication between a moving v...
SACMAT
2009
ACM
14 years 1 days ago
2009
ACM
In this paper, we present a mandatory access control system that uses input from multiple stakeholders to compose policies based on runtime information. In the emerging ubiquitous...
PE
2002
Springer
13 years 5 months ago
2002
Springer
Many emerging mobile wireless applications depend upon secure group communications, in which data is encrypted and the group's data encryption key is changed whenever a membe...
TCOM
2010
13 years 3 months ago
2010
—Cooperative spectrum sensing has been shown to be able to greatly improve the sensing performance in cognitive radio networks. However, if cognitive users belong to different se...
PAMI
2010
13 years 4 months ago
2010
—A new multimodal biometric database designed and acquired within the framework of the European BioSecure Network of Excellence is presented. It is comprised of more than 600 ind...